Back to Search
Start Over
Dynamics of uterine and ovarian arteries flow velocity waveforms and their relation to follicular and luteal growth and blood flow vascularization during the estrous cycle in Friesian cows
- Source :
- Theriogenology. 121:112-121
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- Doppler ultrasonography enabled understanding of the reproductive system hemodynamics in cyclic and pregnant cattle. To confirm the hypothesis that the ipsilateral ovarian and uterine arterial blood flows to the ovulating ovary are higher than the contralateral one along days and phases (follicular, early luteal, mid-luteal, late luteal) of the estrous cycle, eight cyclic spontaneously ovulating cows were scanned with Doppler ultrasound each other day along three oestrous cycles to monitor the follicular dynamics, the vascularization of the ovulatory follicle (OF), the corpus luteum (CL) developmental dynamics, the ipsilateral and the contralateral ovarian and uterine arterial diameters and their blood flow. Results proved the hypothesis. Both days and phases of the estrus cycle influenced (P = 0.0001) the follicular dynamic, the luteal hemodynamics, the ovarian and uterine hemodynamic. The ovulatory wave and the mid-luteal non-ovulatory wave had expanding numbers and the diameters of small, medium and large follicles. Though area, antral area, vascularization area of the OF ascended from Day −4 to the day of ovulation (Day 0), but the percent of its vascularization area and that of granulose layer increased till Day −3. The CL diameter increase till Day 15, and its vascularization area increased till Day 13, but its% of vascularization area ascended (P = 0.0001) from Days 1–4 and declined from Days 9–13. Both RI and PI of the ipsilateral ovarian artery were lower than the contralateral one; but, both obtained high values during the follicular phase. A linear increase (P = 0.0001) of uterine horns vascularization area and both ovarian and uterine arteries diameters, PSV and EDV from follicular to late luteal phases accompanied a linear decrease of their PI and RI. In conclusion, the ovarian and uterine blood flows vary according to the estrous day, estrous phase, the ovulating ovary, ovulatory follicle growth and corpus luteum developmental stage.
- Subjects :
- endocrine system
media_common.quotation_subject
Neovascularization, Physiologic
Estrous Cycle
Ovary
Luteal phase
Biology
Ovarian artery
Andrology
03 medical and health sciences
0302 clinical medicine
Food Animals
Corpus Luteum
medicine.artery
Follicular phase
medicine
Animals
Small Animals
Uterine artery
Ovulation
reproductive and urinary physiology
media_common
Estrous cycle
030219 obstetrics & reproductive medicine
urogenital system
Equine
Uterus
0402 animal and dairy science
04 agricultural and veterinary sciences
040201 dairy & animal science
Uterine Artery
medicine.anatomical_structure
Cattle
Female
Animal Science and Zoology
Corpus luteum
Blood Flow Velocity
Subjects
Details
- ISSN :
- 0093691X
- Volume :
- 121
- Database :
- OpenAIRE
- Journal :
- Theriogenology
- Accession number :
- edsair.doi.dedup.....f6a239066a3ba7828251f04bbd12d4c6